User Summary The Microsoft Entertainment Pack: The Puzzle Collection is a set of ten different puzzle games released by Microsoft on July 31, 1997. Some of the games were designed by Alexey Pajitnov, who is best known as the developer of Tetris. The games included are: Fringer - Untie knots before they are pushed off the bottom of the screen. Finty Flush - A marble moving game. Mixed Genetics - Breed out impurity from hybrid animals before they fill up the level. Rat Poker - An interesting take on a matching game. Lineup - A sports themed line up game. Jewel Chase - A game that pits you against a slow moving computer to gather jewels and escape. Color Collision - A game where you must carefully hit the correct colored shapes. Charmer - You must keep the stacks of pots low by playing a variety of flutes at different snakes. Spring Weekend - Rotate tiles to make pre-determined shapes. Muddled Casino - Move cards off the screen in the correct order.